Home / 12,631.40-18,952.56-6,781.17

Finding the Fourth Proportional to 12,631.40, 18,952.56 and 6,781.17

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Solution

The fourth proportional to 12,631.40, 18,952.56 and 6,781.17 is: 10,174.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.40 : 18,952.56 = 6,781.17 : x
  2. Step 2: Convert to fraction form
    12,631.40/18,952.56 = 6,781.17/x
  3. Step 3: Cross multiply
    12,631.40x = 18,952.56 × 6,781.17
  4. Step 4: Simplify right side
    12,631.40x = 128,520,531.30
  5. Step 5: Solve for x
    x = 128,520,531.30/12,631.40
  6. Step 6: Final answer
    x = 10,174.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.